import 'package:flutter/material.dart';

void main() {
  runApp(
    new MaterialApp(
      title: '进度条',
      home: new ActionViewEcology(100, 100, 100, 50, 52, 50),
    )
  );
}


// => runApp(new ActionViewEcology(100, 100, 100, 50, 52, 50));

class ActionViewEcology extends StatelessWidget {

  int maximumEmergy;
  int maximumHunger;
  int maximumMood;
  int currentEmergy;
  int currentHunger;
  int currentMood;

  /*
   * 构建函数，传递参数
   *  最大能量值
   *  最大饥饿值
   *  最大情绪值
   *  当前能量值
   *  当前饥饿值
   *  当前情绪值
   */
  ActionViewEcology(this.maximumEmergy, this.maximumHunger, this.maximumMood,
      this.currentEmergy, this.currentHunger, this.currentMood);

  // 获取进度条描述文本
  Align _getNameText(BuildContext context, String text) {
    return new Align(
      alignment: FractionalOffset.topLeft,
      child: new Text(
        text,
        style: new TextStyle(
          fontSize: 15.0,
          color: Colors.black,
          height: 1.5,
        ),
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    return new Container(
      margin: const EdgeInsets.fromLTRB(17.0, 0.0, 17.0, 10.0),
      child: new Column(
        children: <Widget>[
          _getNameText(context,  '能量（$currentEmergy/$maximumEmergy）'),
          new LinearProgressIndicator(value: currentEmergy/maximumEmergy,),
          _getNameText(context, '饥饿（$currentHunger/$maximumHunger）'),
          new LinearProgressIndicator(value: currentHunger/maximumHunger,),
          _getNameText(context, '心情（$currentMood/$maximumMood）'),
          new LinearProgressIndicator(value: currentMood/maximumMood,),
        ],
      ),
    );
  }
}